Home / Standards / GB/T 13404-2008 GB/T 13404-2008 Active Non-metallic PTFE envelope gaskets for pipe flanges 管法兰用非金属聚四氟乙烯包覆垫片 Standard Type GBT ICS 23.040.60 CCS J15 Status 现行 Issue Date 2008-08-25 Implementation 2009-04-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A